package com.hmdp.utils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1.判断是否需要拦截（ThreadLocal中是否有用户）
//        log.info("LoginInterceptor");
        if (UserHolder.getUser() == null) {
            // 没有，需要拦截，设置状态码
            log.info("未登录");
            response.setStatus(401);
            // 拦截
            return false;
        }
        // 有用户，则放行
        return true;
    }
}
